General Description

The MAX2837 direct-conversion zero-IF RF transceiver is designed specifically for 2.3GHz to 2.7GHz wireless broadband systems. The MAX2837 completely integrates all circuitry required to implement the RF transceiver function, providing RF-to-baseband receive path; and baseband-to-RF transmit path, VCO, frequency synthesizer, crystal oscillator, and baseband/control interface.

Features

● 2.3GHz to 2.7GHz Wideband Operation

● Complete RF Transceiver, PA Driver, and Crystal Oscillator

    • 0dBm Linear OFDM Transmit Power

    • -70dBr Tx Spectral Emission Mask

    • 2.3dB Rx Noise Figure

    • Tx/Rx I/Q Error and LO Leakage Detection

    • Monolithic Low-Noise VCO with -39dBc Integrated Phase Noise

    • Programmable Tx I/Q Lowpass Anti-Aliasing Filter

    • Sigma-Delta Fractional-N PLL with 20Hz Step Size

    • 45dB Tx Gain-Control Range

    • 94dB Receive Gain-Control Range

    • 60dB Analog RSSI Instantaneous Dynamic Range

    • 4-Wire SPI Digital Interface

    • I/Q Analog Baseband Interface

    • Digitally Tuned Crystal Oscillator

    • On-Chip Digital Temperature Sensor Read-Out

● +2.7V to +3.6V Transceiver Supply

● Low-Power Shutdown Current

● Small 48-Pin Thin QFN Package (6mm x 6mm x 0.8mm)

Applications

● 802.16-2004 Fixed WiMAX®

● Korea Wibro and 802.16e Mobile WiMAX

● Dual Mode™ WiMAX/802.11b/g Wi-Fi

● Proprietary Wireless Broadband Systems

● 4G/LTE Systems